Edsal?s heavy duty steel shelving unit can be assembled vertically as shelves or horizontally as a workbench for your convenience. You can adjust this multi-purpose unit shelves in 1.5 in. increments to fit any storage need. Assembles with a hammer (not included) and no nuts or bolts are required for easy installation. Edsal Manufacturing Company manufactures storage systems and industrial furniture. The company, founded in 1952, is headquartered in Chicago, IL.